摘要
软弱围岩是隧道施工中难度较大的部分,具有强度低、稳定性差、持续时间长等特点,施工中容易出现隧道坍塌及地表下沉等情况。根据地质情况选择合理的施工方案,并在施工过程中结合地质预报、监控量测实施动态控制尤为重要。结合某高铁隧道的具体施工情况,就软弱围岩施工进行分析及探讨。
Weak surrounding rock is a difficult part in tunnel construction.It has the characteristics of low strength,poor stability,and long duration.In construction,tunnel collapse and surface subsidence are likely to occur.According to the geological conditions,it is important to choose a reasonable construction plan and implement dynamic control in the course of construction combined with Geological forecast and monitoring measurement.In this paper,the construction of weak surrounding rock is analyzed and discussed in the light of the concrete construction of a high speed rail tunnel.
作者
王锋涛
WANG Fengtao(Xicheng Railway Passenger Line Shaanxi Co.,Ltd.,Xi’an 710000,China)
关键词
隧道
软弱围岩
施工技术
动态控制
tunnel
weak rock
construction technology
dynamic control
